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Related Concept Videos

Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
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Aortic Regurgitation I: Introduction01:15

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IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
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Heart Valves01:16

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The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
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The Aorta01:14

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The aorta is the largest artery in the human body. It originates from the left ventricle of the heart and extends down to the abdomen, where it splits into two smaller arteries. Structurally, it can be divided into four main parts: the ascending aorta, the aortic arch, the thoracic aorta, and the abdominal aorta.
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Aortic Regurgitation III: Medical Management01:25

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Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
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Mitral Valve Prolapse I: Introduction01:27

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IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
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Related Experiment Video

Updated: Apr 15, 2026

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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Relationship between bicuspid aortic valve phenotype, valvular function, and ascending aortic dimensions.

Jun Seok Kim, Sung Min Ko, Hyun-Keun Chee

    The Journal of Heart Valve Disease
    |March 26, 2015
    PubMed
    Summary

    Bicuspid aortic valve (BAV) morphology, specifically the presence of raphe, influences aortic valve function and ascending aorta dimensions. Understanding these BAV phenotypes aids in predicting aortic disease progression.

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    Area of Science:

    • Cardiovascular Medicine
    • Cardiac Surgery
    • Medical Imaging

    Background:

    • Bicuspid aortic valve (BAV) is frequently linked to aortic valve dysfunction and ascending aorta (AA) dilation.
    • The precise relationship between specific BAV morphologies and AA dimensions is not fully understood.

    Purpose of the Study:

    • To investigate the association between BAV morphology, including the presence of raphe and BAV phenotype, and aortic valve function.
    • To characterize ascending aorta dimensions in relation to BAV morphology.

    Main Methods:

    • Retrospective analysis of 164 patients with BAV undergoing aortic valve surgery.
    • BAV classification into Type I (anterior-posterior) and Type II (right-left) orientations.
    • Subdivision based on the presence (raphe+) or absence (raphe-) of raphe.

    Main Results:

    • Type I BAV and raphe+ were more common (62.8% and 61.0%, respectively).
    • Raphe+ patients were younger and predominantly male.
    • Aortic regurgitation was associated with Type I/raphe+ BAV, while aortic stenosis was linked to Type II/raphe- BAV.
    • Raphe+ patients exhibited larger aortic annulus diameters and smaller tubular AA diameters indexed to body surface area (BSA).

    Conclusions:

    • BAV morphology, particularly the presence of raphe, is a significant predictor of aortic valve dysfunction type.
    • BAV phenotype and raphe presence help predict the location of ascending aorta dilatation.